Actor Critic
Category RL Architecture Term Actor Critic Definition of Actor Critic Hybrid RL Method With Separate Policy (Actor) And Value (Critic) Networks Notes About Actor Critic Balances Stability And Sample Efficiency
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Geometric Distortion
Category Image Artifact Term Geometric Distortion Definition of Geometric Distortion Spatial Misregistration Of Anatomy Due To Field Inhomogeneity Or Gradient Nonlinearity Notes About Geometric Distortion Important In Radiation Therapy Planning
Chemical Shift Encoding
Category Technique Term Chemical Shift Encoding Definition of Chemical Shift Encoding Using Frequency Differences To Separate Fat And Water Or To Detect Fatty Infiltration Notes About Chemical Shift Encoding Includes Dixon And Spectroscopy Methods
Larmor Frequency
Category Physics Term Larmor Frequency Definition of Larmor Frequency Precession Frequency Of Nuclear Spins Proportional To Magnetic Field Strength Notes About Larmor Frequency Determines RF Transmit Frequency For A Given Nucleus
Time Activity Curve
Category Kinetic Data Term Time Activity Curve Definition of Time Activity Curve Plot Of Activity In A Region Over Time Used For Dosimetry And Kinetic Modeling Notes About Time Activity Curve Derived From Serial Imaging Or Blood Sampling
Gated Acquisition
Category Cardiac Imaging Term Gated Acquisition Definition of Gated Acquisition Synchronizing Image Capture To ECG To Reduce Motion And Reconstruct Volumes Notes About Gated Acquisition Essential For 3D Cardiac Imaging
Detector Row
Category Hardware Term Detector Row Definition of Detector Row Individual Row Of Detector Elements In Multidetector CT Determining Z Axis Coverage Notes About Detector Row Number Of Rows Defines Maximum Collimation
Truncation Artifact (Gibbs)
Category Artifact Term Truncation Artifact (Gibbs) Definition of Truncation Artifact (Gibbs) Ringing Near Sharp Edges Due To Finite Sampling In K Space Notes About Truncation Artifact (Gibbs) Reduced By Increasing Matrix Or Apodization
Community Partnership Sustainability Plan
Category Strategic Plan Term Community Partnership Sustainability Plan Definition of Community Partnership Sustainability Plan Long Term Plan To Sustain Community Imaging Programs Through Funding, Partnerships, And Evaluation Notes About Community Partnership Sustainability Plan Ensures Continuity
Post Deployment Evaluation
Category Quality Practice Term Post Deployment Evaluation Definition of Post Deployment Evaluation Assessing Real World Performance, User Feedback, And Unintended Consequences After Deployment Notes About Post Deployment Evaluation Informs Iterative Improvements